Car or truck.



W. M. DUNOAN.

GAR 0R TRUCK.

APPLICATION FILED 11111.13, 1911.

Patented Oct. 17, 1911.

inventor: W. M. Duncan WILLIAM MILLEN DUNCAN, OF ALTON, ILLINOIS.

GAR 0R TRUCK.

Specification of Letters Patent.

Patented Oct. 17, 1911.

Application filed August 18, 1911. Serial No. 644,734.

To all whom it may concern:

Be it known that I, WILLIAM M. DUNCAN, a citizen of the United States ofAmerica, residing in Alton, county of Madison, and State of Illinois,have invented certain new and useful Improvements in Cars or Trucks,

7 of which the following is a full, clear, and

exact description, reference being had to the accompanying drawing,forming part of this specification.

My invention relates to a four-wheeled car or truck, and moreparticularly to cars or trucks of the kind commonly employed in minesand termed mine cars. For the sake of simplicity of description, theimprovement will hereinafter be termed a mine car.

The object of the invention is to provide the body of the mine car withtransversely arranged axle box receiving plates, flanged in a manner tohold the axle boxes seated therein in alinement with each other, and soconstructed at their central portions as to furnish a greater degree ofrigidity and reinforcement throughout the intermediate portions of theplates than it is possible to secure by continuing the axle boxconfining flanges from end to end of the plates.

Another object in addition to that of strengthening and reinforcing theintermediate portion of the plates is to provide the plates with widenedcentral portions, in or der that they will support the mine car bodythroughout a greater expanse longitudinally of the car body.

Figure I is an inverted plan view of a mine car made in accordance withmy improvement. Fig. II is a longitudinal section taken partiallythrough the mine car on line IIII, Fig. I.

In the accompanying drawings: A designates the floor of the mine car,and B are the car wheels, fitted to the axles C, the latter of which aremounted in axle boxes D having heads E. The parts just-described aresuch as are common to mine cars in general, and no invention per se isherein claimed for them.

1 designates plates seated against the bottom face of the car body floorA and held thereto by bolts 2. These plates are provided at their sideedges with downturned flanges 3, between which the heads E of the axleboxes D are arranged, and said heads are held between said flanges bythe bolts 2, previously mentioned, which secure the heads of the axleboxes, as well as the plates 1, to the floor of the mine car body. Theside flanges 3 do not extend throughout the length of the plates 1, butonly extend toward the centers of the plates from their ends. to asufiicient degree to afford braces for the axle boxes that will assistin holding the axle boxes from turning on the plates, and relieve thebolts 2 of strain to which they would be subjected in the absence of theflanges. The plates 1 are widened throughout their central portions,preferably to a degree corresponding to that acquired by having themetal that enters into the side flanges 3 at the end portions of theplates lie in the plane occupied by the bottom faces of the plates andthe faces of said side flanges. It will be seen that this widening orbroadening of the plates affords much greater transverse plate areathroughout the central portion of the plates than would be obtained ifthe side flanges 3 were continued from end to end of the plates, andthat this widening of the plates to more efiiciently support the carbody floor is derived without detract-ing from the efficiency of theside flangesby which the axle boxes D are held in the manner explained.

The plates 1 are reinforced and strengthened throughout their centralunflanged port-ions by downwardly extending swells 4, the greatestlength of which is preferably longitudinally of the plates. These swellsfurnish what may be termed reinforcing ribs, that bulge away from themain planes of the plates 1, and consequently aflord marked stiffnessand rigidity in the plates. The swells, as will be readily understood,afford ample substitutes for the side flanges that are dispensed withthroughout the central portions of the plates and, in fact, af-- fordgreater strength than would be ac-v quired by the use of the flanges atthe longitudinal centers of the plates, while making it possible toderive the benefit of the widened central portions of the plates, whichcould not be derived if the side flanges were continued from end to endof each plate.

I claim 1. The combination with the floor of a car or truck, of axle boxreceiving plates secured to said floor, the said plates being providedadjacent their ends with side flanges and having reinforcing swellsintermediate of their ends.

2. The combination with the floor of a car or truck, of axle boxreceiving plates secured to said floor, the said plates being providedadjacent their ends with side flanges and having relnforclng swellsextendlng longltudinally thereof intermediate of their ends. 3. Thecombination with the floor of a car or truck, of axle box receivingplates secured to said floor, the said plates being providedadjaoent'their' ends with side flanges and having widened centralportions provided with reinforcing swells. v

- 4. The'combination with the floor of a car "4 or' truck, of axle boxreceiving plates secured tosaid floor, the said plates being providedadjacent their ends with side flanges and having widened unflangedcentral port-ions provided with reinforcing swells.

5. The combination with the floor of a car or truck, of axle boxreceiving plates secured to said floor, the said plates being providedadjacent their ends with side flanges and having widened unflangedcentral portions provided with reinforcing swells extendinglongitudinally thereof.

WILLIAM MILLEN DUNCAN.

In the presence of A. B. STRATTON, GEO. D. DUNCAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

